<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div id="root"></div>
  <script type="text/javascript" src="../js/react.development.js"></script>
  <script type="text/javascript" src="../js/react-dom.development.js"></script>
  <script type="text/javascript" src="../js/prop-types.js"></script>
  <script type="text/javascript" src="../js/babel.min.js"></script>
  <script type="text/babel">
    class Date extends React.Component {
      fUpdate = () => {
        this.forceUpdate()
      }
      componentWillUpdate() {
        console.log('componentWillUpdate');
      }
      componentDidUpdate() {
        console.log('componentDidUpdate');
      }
      render() {
        console.log('render');
        return (
          <div>
            <button onClick={this.fUpdate}>强制更新按钮</button>
          </div>
        )
      }
    }
    ReactDOM.render(<Date />, document.getElementById('root'))

  </script>
</body>

</html>